Emerson 1500 Pacemaker User Manual


 
Procedure
1. Set Update Rate as desired.
Option Description
Normal
All process data is polled at the rate of 20 times per second (20 Hz).
All process variables are calculated at 20 Hz.
This option is appropriate for most applications.
Special
A single, user-specified process variable is polled at the rate of 100 times per sec-
ond (100 Hz). Other process data is polled at 6.25 Hz). Some process, diagnostic,
and calibration data is not polled.
All available process variables are calculated at 100 Hz.
Use this option only if required by your application.
If you change Update Rate, the settings for Flow Damping, Density Damping, and
Temperature Damping are automatically adjusted.
2.
If you set Update Rate to Special, select the process variable to be polled at 100 Hz.
Effects of Update Rate = Special
Incompatible features and functions
Special mode is not compatible with the following features and functions:
Enhanced events. Use basic events instead.
All calibration procedures.
Zero verification.
Restoring the factory zero or the prior zero.
If required, you can switch to Normal mode, perform the desired procedures, and then
return to Special mode.
Process variable updates
Some process variables are not updated when Special mode is enabled.
Configure device options and preferences
60 Micro Motion
®
Model 1500 Transmitters with Analog Outputs